This is when you leave your jacket sitting in a place where a pet of some sort can take a dump on it without your knowing of. And the unfortunate surprise of when you put on your jacket to find out that you have a turd stuck to you.
"oh my cat just gave me a rusty jacket!"

Going by the smell I think your dog has just given me a rusty jacket again!"
by oddjob in the shire November 2, 2010
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